p2p on wan2

dear all

i have 2 adsl lines

how can i bind p2p programs to wan2?

10x

Route p2p traffic over default gateway, it means Wan2 should be as default gateway (p2p redirection will not work correctly over alternative gateway with policy-routing, as time is needed to recognize p2p packets).
then redirect important services over Wan1 using policy-routing.